Summary

• Add a "Base Currency" column to scenario reports (placed after "Base NPV") so users can see which currency the NPV values are denominated in
• Add baseCurrency parameter to ReportWriter::writeScenarioReport() and update all three callers (pricinganalytic, crifanalytic, xvaenginecg) to pass the simulation base currency
• Add a "Base Currency" column to stress test reports (placed after "Base NPV") using the existing baseCcy variable in runStressTest()
• Add unit test verifying scenario report column structure, header names, and data values
• Update test column indices in stress test suites for the shifted Sensitivity column
• Update comparison_config.json with "Base Currency" column settings for both scenario and stress test reports (null tolerances for exact string matching)
• Update all expected output CSV files to include the new column

Motivation

Scenario and stress test reports previously had no indication of which currency the NPV values were denominated in. In multi-currency portfolios, this made it difficult to interpret the Base NPV, Scenario NPV, and Sensitivity columns without cross-referencing the simulation configuration.

Test plan

• orea-test-suite passes (includes new testWriteScenarioReportBaseCurrency)
• Stress test suite passes with updated column indices
• Full ctest suite passes
• Example expected outputs verified against regenerated CSVs